JPH0627003B2 - Method for producing ceramic powder - Google Patents
Method for producing ceramic powderInfo
- Publication number
- JPH0627003B2 JPH0627003B2 JP61156288A JP15628886A JPH0627003B2 JP H0627003 B2 JPH0627003 B2 JP H0627003B2 JP 61156288 A JP61156288 A JP 61156288A JP 15628886 A JP15628886 A JP 15628886A JP H0627003 B2 JPH0627003 B2 JP H0627003B2
- Authority
- JP
- Japan
- Prior art keywords
- powder
- ceramic powder
- solution
- mgo
- ceramic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Description
【発明の詳細な説明】 〔発明の概要〕 B2O3溶液にMgO粉体を浸漬した混合液を濾過した後、熱
処理をしてセラミック粉体を得る。DETAILED DESCRIPTION OF THE INVENTION [Outline of the Invention] A mixed solution of MgO powder immersed in a B 2 O 3 solution is filtered and then heat-treated to obtain a ceramic powder.
本発明はセラミック粉体の製造方法に係り、特にMgO粉
末にB2O3を均一に分散させたセラミック粉体の製造方法
に関する。The present invention relates to a method for producing a ceramic powder, and more particularly to a method for producing a ceramic powder in which B 2 O 3 is uniformly dispersed in MgO powder.
〔従来技術と問題点〕 セラミックの製造は基本的に原料となるセラミック粉体
の成形物を熱処理（焼結）する工程をとる。このセラミ
ック製造の原料となるセラミック粉体は低温で焼結しや
すいいわゆる焼結性の優れた特性が必要とされる。[Prior Art and Problems] Ceramic production basically involves a step of heat-treating (sintering) a molded product of ceramic powder as a raw material. The ceramic powder, which is a raw material for manufacturing the ceramic, is required to have a property of so-called sinterability that is easily sintered at a low temperature.
従来酸化マグネシウム(MgO)粉末に酸化ほう素(B2O3)粉
末を添加し、その後成形焼結して得られるセラミックス
が知られている。MgO粉末にB2O3を添加する方法は、MgO
粉末に通常B2O3を粉末の形態で混合することによって行
なわれている。しかしながらこのような添加方法ではB2
O3がMgOと均一に混合しないことがある。またB2O3が粉
末であるためにMgO粒子近傍においてB2O3の分布が偏よ
るという問題がある。BACKGROUND ART Conventionally, there is known a ceramic obtained by adding boron oxide (B 2 O 3 ) powder to magnesium oxide (MgO) powder and then compacting and sintering. The method of adding B 2 O 3 to MgO powder is MgO
This is usually done by mixing the powder with B 2 O 3 in the form of a powder. However, with such an addition method, B 2
O 3 may not mix uniformly with MgO. Further, since B 2 O 3 is a powder, there is a problem that the distribution of B 2 O 3 is biased near the MgO particles.
本発明はMgO粉末にB2O3を均一に分布されたセラミック
粉体の製造方法を提供することを目的とする。An object of the present invention is to provide a method for producing a ceramic powder in which B 2 O 3 is uniformly distributed in MgO powder.
〔問題点を解決するための手段〕 上記問題点は本発明によれば酸化ほう素溶液に酸化マグ
ネシウム粉末を浸漬して該酸化ほう素及び酸化マグネシ
ウム含有液を作成し、該酸化ほう素及び酸化マグネシウ
ム含有液を濾過して得られた残渣を加熱することを特徴
とするセラミック粉体の製造方法によって解決される。[Means for Solving Problems] According to the present invention, the above problems are caused by immersing magnesium oxide powder in a boron oxide solution to prepare the boron oxide- and magnesium oxide-containing liquid, and This is solved by a method for producing a ceramic powder, which comprises heating a residue obtained by filtering a magnesium-containing liquid.
本発明は、MgO粉末により均一にB2O3を分散させる方法
として、溶液を加熱したときに生じる溶液の熱分解ない
しは他化合物との生成反応と、溶液の溶質が均一に分散
しやすいことを利用するものであり、MgO粉末をB2O3を
溶した溶液に浸し、その後、加熱して、MgO粉末の各MgO
粒子表面にB2O3を析出させるようにしたものである。The present invention, as a method of uniformly dispersing B 2 O 3 by MgO powder, the thermal decomposition of the solution generated when the solution is heated or the formation reaction with other compounds, the solute of the solution is easy to be uniformly dispersed. The MgO powder is soaked in a solution of B 2 O 3 and then heated so that each MgO powder of MgO powder is used.
B 2 O 3 is deposited on the surface of the particles.
以下本発明の実施例を説明する。 Examples of the present invention will be described below.
C2H5OHに４Ｗｔ％のB2O3を混合しながら約８０℃で加熱
して、B2O3を溶した溶液を用意する。この溶液に例えば
純度９９．９％、平均粒径１μｍのMgOの粉末を、室温
中で浸し、混合する。その後、この混合液を濾過し、溶
液により湿った状態にある残渣粉末を得る。これを自然
乾燥した後、凝集状態にある粉末をほぐす。そして大気
中で580℃以下、例えば500℃の温度で熱処理を行ない、
目的のセラミック粉末を得る。While mixing 4 wt% of B 2 O 3 with C 2 H 5 OH and heating at about 80 ° C., a solution of B 2 O 3 is prepared. A MgO powder having a purity of 99.9% and an average particle size of 1 μm is immersed in this solution at room temperature and mixed. Then, this mixed solution is filtered to obtain a residual powder that is wet with the solution. After this is naturally dried, the powder in the agglomerated state is loosened. Then, heat treatment is performed in the atmosphere at a temperature of 580 ° C or lower, for example, 500 ° C,
Obtain the desired ceramic powder.
以上説明したように、本発明によればMgO粉末により均
一にB2O3を分布させることができ、得られたセラミック
粉体により成形体を作製し、例えば有機バインダ以外に
は他に何も添加しない場合でも従来法による1400〜1600
℃の温度に対して約1200℃での低温焼成で焼結体が得ら
れるという効果がある。As described above, according to the present invention, it is possible to uniformly distribute B 2 O 3 by MgO powder, and a molded body is made of the obtained ceramic powder. 1400 to 1600 by the conventional method even when not added
There is an effect that a sintered body can be obtained by low temperature firing at about 1200 ° C with respect to the temperature of ° C.
Claims (1)
浸漬して該酸化ほう素及び酸化マグネシウム含有液を作
成し、該酸化ほう素及び酸化マグネシウム含有液を濾過
して得られた残渣を加熱することを特徴とするセラミッ
ク粉体の製造方法。1. A magnesium oxide powder is immersed in a boron oxide solution to prepare a solution containing boron oxide and magnesium oxide, and the solution obtained by filtering the solution containing boron oxide and magnesium oxide is heated. A method for producing a ceramic powder, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61156288A JPH0627003B2 (en) | 1986-07-04 | 1986-07-04 | Method for producing ceramic powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61156288A JPH0627003B2 (en) | 1986-07-04 | 1986-07-04 | Method for producing ceramic powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6317219A JPS6317219A (en) | 1988-01-25 |
| JPH0627003B2 true JPH0627003B2 (en) | 1994-04-13 |
Family
ID=15624533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61156288A Expired - Lifetime JPH0627003B2 (en) | 1986-07-04 | 1986-07-04 | Method for producing ceramic powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0627003B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10781500B2 (en) * | 2011-09-21 | 2020-09-22 | Rheinkalk Gmbh | Granules containing agglomerated bulk material |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5724852A (en) * | 1996-08-02 | 1998-03-10 | Lee; Jimmy Dale | Portable small rebar bending machine |
| CN110526685B (en) * | 2019-04-09 | 2023-04-14 | 厦门钨业股份有限公司 | Pressure transmission element for synthesizing superhard composite sheet and preparation method thereof |
-
1986
- 1986-07-04 JP JP61156288A patent/JPH0627003B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10781500B2 (en) * | 2011-09-21 | 2020-09-22 | Rheinkalk Gmbh | Granules containing agglomerated bulk material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6317219A (en) | 1988-01-25 |
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